AXL F BK PN
105731_en_04 PHOENIX CONTACT 8
6 Connecting PROFINET and supply
6.1 Connecting PROFINET
Connect PROFINET to the bus coupler via an 8-pos. RJ45
connector.
Figure 2 Pin assignment of the Ethernet socket (RJ45)
Only one twisted pair cable with an impedance of 100Ω may
be connected to each Ethernet interface in RJ45 format. The
data transmission speed is 100Mbps. The 100Base-TX port
of the bus coupler is able to detect a pair of incorrectly con-
nected receive cables (RD+/RD-) and to correct them using
the auto polarity correction function.
For the pin assignment, please refer to the following table:
6.2 Connecting the supply voltage - terminal point
assignment
Figure 3 Terminal point assignment
7 Connection example
Figure 4 Connection of the cables
Pin Assignment
1TxD + (transmit data+)
2 TxD - (transmit data-)
3RxD+ (receive data +)
4 Reserved
5 Reserved
6 RxD- (receive data -)
7 Reserved
8 Reserved
Auto crossover
Both Ethernet interfaces are provided with the
auto crossover function.
Shielding
The shielding ground of the connected twist-
ed pair cables is electrically connected with
the socket. When connecting network seg-
ments, avoid ground loops, potential trans-
fers, and voltage equalization currents via the
braided shield.
RJ45
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Observe bending radii
The housing dimensions specified under "Di-
mensions" refer to the bus coupler with I/O
connectors without Ethernet connection.
When installing the bus coupler in a control
box, observe the bending radii of the Ethernet
cables and the connectors used (e.g.,
FLCAT5FLEX: 30mm for fixed installation
and FLCAT5HEAVY: 30mm without outer
sheath and 45mm with outer sheath). If re-
quired, use angled RJ45 connectors to main-
tain these bending radii.
Termi-
nal
point
Color Assignment
Supply voltage input
a1, a2 Red 24 V DC
(U
L
)
Supply of the logic voltage
(internally jumpered)
b1, b2 Blue GND Reference potential of the
supply voltage (internally
jumpered)
LNK
X1
UL
24V DC
(U )
L
+
-
BF
SF
RDY
D
E
Ethernet
LNKACT
ACT
X2
